Root/tools/perf/builtin-evlist.c

1/*
2 * Builtin evlist command: Show the list of event selectors present
3 * in a perf.data file.
4 */
5#include "builtin.h"
6
7#include "util/util.h"
8
9#include <linux/list.h>
10
11#include "perf.h"
12#include "util/evlist.h"
13#include "util/evsel.h"
14#include "util/parse-events.h"
15#include "util/parse-options.h"
16#include "util/session.h"
17
18struct perf_attr_details {
19    bool freq;
20    bool verbose;
21};
22
23static int comma_printf(bool *first, const char *fmt, ...)
24{
25    va_list args;
26    int ret = 0;
27
28    if (!*first) {
29        ret += printf(",");
30    } else {
31        ret += printf(":");
32        *first = false;
33    }
34
35    va_start(args, fmt);
36    ret += vprintf(fmt, args);
37    va_end(args);
38    return ret;
39}
40
41static int __if_print(bool *first, const char *field, u64 value)
42{
43    if (value == 0)
44        return 0;
45
46    return comma_printf(first, " %s: %" PRIu64, field, value);
47}
48
49#define if_print(field) __if_print(&first, #field, pos->attr.field)
50
51static int __cmd_evlist(const char *input_name, struct perf_attr_details *details)
52{
53    struct perf_session *session;
54    struct perf_evsel *pos;
55
56    session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
57    if (session == NULL)
58        return -ENOMEM;
59
60    list_for_each_entry(pos, &session->evlist->entries, node) {
61        bool first = true;
62
63        printf("%s", event_name(pos));
64
65        if (details->verbose || details->freq) {
66            comma_printf(&first, " sample_freq=%" PRIu64,
67                     (u64)pos->attr.sample_freq);
68        }
69
70        if (details->verbose) {
71            if_print(type);
72            if_print(config);
73            if_print(config1);
74            if_print(config2);
75            if_print(size);
76            if_print(sample_type);
77            if_print(read_format);
78            if_print(disabled);
79            if_print(inherit);
80            if_print(pinned);
81            if_print(exclusive);
82            if_print(exclude_user);
83            if_print(exclude_kernel);
84            if_print(exclude_hv);
85            if_print(exclude_idle);
86            if_print(mmap);
87            if_print(comm);
88            if_print(freq);
89            if_print(inherit_stat);
90            if_print(enable_on_exec);
91            if_print(task);
92            if_print(watermark);
93            if_print(precise_ip);
94            if_print(mmap_data);
95            if_print(sample_id_all);
96            if_print(exclude_host);
97            if_print(exclude_guest);
98            if_print(__reserved_1);
99            if_print(wakeup_events);
100            if_print(bp_type);
101            if_print(branch_sample_type);
102        }
103
104        putchar('\n');
105    }
106
107    perf_session__delete(session);
108    return 0;
109}
110
111static const char * const evlist_usage[] = {
112    "perf evlist [<options>]",
113    NULL
114};
115
116int cmd_evlist(int argc, const char **argv, const char *prefix __used)
117{
118    struct perf_attr_details details = { .verbose = false, };
119    const char *input_name = NULL;
120    const struct option options[] = {
121        OPT_STRING('i', "input", &input_name, "file",
122                "Input file name"),
123        OPT_BOOLEAN('F', "freq", &details.freq,
124                "Show the sample frequency"),
125        OPT_BOOLEAN('v', "verbose", &details.verbose,
126                "Show all event attr details"),
127        OPT_END()
128    };
129
130    argc = parse_options(argc, argv, options, evlist_usage, 0);
131    if (argc)
132        usage_with_options(evlist_usage, options);
133
134    return __cmd_evlist(input_name, &details);
135}
136

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